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The human body is a marvel of science and researchers have discovered a strange reoccurring mathematical pattern within its cells. Our bodies are made up of a massive variety of individual cells with countless different functions, from neurons in our nervous system to the oxygen carriers that all work in harmony to keep us alive. Experts from scientific research institutions in Germany, Canada, Spain, and the US have worked together on a study to determine just how many cells of each type there are in the human body and the results are staggering. They found that most adult males possess around 36 trillion cells, while adult females have in the region of 28 trillion cells. For a 10-year-old child, they have around 17 trillion. Interestingly though, scientists discovered that, regardless of the total number of cells, if they are grouped according to their function, the proportions for each individual remain the same. The researchers explained in their findings: “These patterns are suggestive of a whole-organism trade-off between cell size and count and imply the existence of cell-size homeostasis across cell types.” Scientists believe there is a natural balancing act at play between different cell types with new cells being produced to maintain the balance. The body produces fewer larger cells (such as muscle fibres) and more smaller cells (like blood cells). It is hoped that future studies will be able to uncover exactly how this happens and how bodies seem to naturally regulate cells. They explained that all cells are perfectly sized for their roles and any deviation from their scale can indicate the presence of disease. Experts have made their data, analysis and results public in the hopes that future studies into biology will be able to utilise their research. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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It’s happened to us all. Maybe you’re walking down the street, or sitting on the bus, or even just sending an email – then suddenly, you realise you’ve been here before. Déjà vu can be a puzzling thing. It literally means already seen in English, and it remains pretty mysterious as to why we feel it. Now, scientists have a couple of theories. Sanam Hafeez, a clinical psychologist, told Fox News: "It refers to the eerie and distinct feeling that one has already experienced the current situation or event, even though it’s a new and unfamiliar occurrence. "It feels like a powerful wave of familiarity with the present moment as if the person is re-living a past experience. "Some suggest it may be linked to how memories are processed in the brain, potentially involving delays or errors in memory retrievals." She added that it may be because the brain is processing information through multiple pathways at the same time, creating the illusion of a memory when you are living in the present moment. She said: "Regardless of the precise mechanism, déjà vu is a transient and common experience that lasts only briefly, affecting people of all ages and not considered a pathological condition. "While it remains a puzzle, déjà vu continues to be a fascinating facet of human consciousness." "It is also important to note that déjà vu is not associated with any particular medical or psychological condition. It is usually a brief and transient experience and is considered a normal aspect of human perception and memory." About two-thirds of people in good health experience déjà vu during their lifetime, according to WebMD, though it is more likely to happen to people aged 15 to 25. The website explains: "A familiar sight or sound can trigger the feeling. You may walk into a room in a building you’ve never visited yet feel like you know it intimately." Health.com adds: "People with more education, those who travel a lot and people who can recall their dreams are also more likely to experience déjà vu." How to join the indy100's free WhatsApp channel Sign up to our free indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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